2010

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When the Accuracy and Radius values are increased, the resulting rendered
image shows the circular spots have almost fully disappeared and the
Global Illumination is much more uniform when compared to the
previous rendering. Increasing the number of Global Illumination photons
should aid in making the Global Illumination more uniform.
In the next steps, you increase the number of photons to provide a more
uniform Global Illumination in the scene.
To increase the Global Illumination photons
1 In the Hypershade, double-click on the icon for spotLightShape1 to
display the attributes for the spotlight.
2 In the Attribute Editor, click the spotLightShape1 tab to display the
lighting attributes for the spotlight.
3 In the Caustic and Global Illumination attributes adjust the settings to
the following:
Global Illum Photons: 80000
When you increase the number of Global Illumination Photons you are
increasing the resulting density of the photon map that gets produced
at the beginning of the render process. The more photons, the smoother
the resulting Global Illumination. Increasing the number of photons also
increases the rendering time.
To render the image
1 In the Render View window, click the Redo Previous Render icon to render
the image.
514 | Chapter 9 Rendering